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Untethered wavelength-selective multi-shape programmable hybrid soft robot.

Eungyoul Oh1, Yeonjae Lee2, Hyo-Jeong Lee3

  • 1Department of Electrical Engineering, Sookmyung Women's University, Seoul, 04310, Korea.

Scientific Reports
|March 19, 2025
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Summary
This summary is machine-generated.

This study presents a novel soft robot capable of multiple shape changes using light. This untethered, wavelength-selective device offers advanced functionality for diverse applications in healthcare and automation.

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Area of Science:

  • Soft robotics
  • Materials science
  • Biomedical engineering

Background:

  • Soft robots often have limited shape-shifting capabilities, restricting them to single tasks.
  • Untethered control and multi-shape programmability are key challenges in soft robotics.

Purpose of the Study:

  • To develop an untethered, wavelength-selective soft robot capable of multiple distinct shape transformations.
  • To engineer a soft robot with programmable multi-shape actuation using light stimuli.

Main Methods:

  • Fabrication of a soft robot using silicone/hydrogel materials embedded with metal nanoparticles.
  • Utilizing wavelength-selective light to induce reversible shape transformations.
  • Engineering varying stiffness in robot components for origami-like folding actuation.

Main Results:

  • The robot demonstrated reversible shape changes in response to specific light wavelengths.
  • Four distinct shape morphologies were achieved through controlled light stimuli.
  • The robot exhibited origami-like folding actuation due to engineered stiffness gradients.

Conclusions:

  • The developed soft robot offers untethered, multi-shape programmability.
  • This technology enables diverse mechanical tasks, advancing soft robotics for healthcare and automation.
  • The wavelength-selective actuation mechanism provides a foundation for sophisticated soft robotic systems.